PHP | levenshtein() Function

PHP levenshtein() Function


Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP levenshtein() Function.

The built-in levenshtein() function in PHP is used to calculate and return the levenshtein distance between two strings.

Syntax

Following below is the syntax to use this function -

int levenshtein ( string $str1 , string $str2 )


Parameter Details

Sr.NoParameters & Description
1

str1

One of the strings being evaluated for Levenshtein distance.

2

str2

Second strings being evaluated for Levenshtein distance.

3

cost_ins

Defines the cost of insertion.

4

cost_del

Defines the cost of deletion.


Return Value

It returns the levenshtein distance between two argument strings, else -1 if one of the argument strings is longer than the limit of 255 characters.

Example

Try out the example below -

<?php
   echo 'the distance between two strings is ';
   echo levenshtein("Hello World","ello World");
?>

Output

When the above code is executed, it will produce the following result -

the distance between two strings is 1


Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we will be studying about the PHP localeconv() Function.

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